Home / 31,797.78-47,640.55-19,292.42

Finding the Fourth Proportional to 31,797.78, 47,640.55 and 19,292.42

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Solution

The fourth proportional to 31,797.78, 47,640.55 and 19,292.42 is: 28,904.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,797.78 : 47,640.55 = 19,292.42 : x
  2. Step 2: Convert to fraction form
    31,797.78/47,640.55 = 19,292.42/x
  3. Step 3: Cross multiply
    31,797.78x = 47,640.55 × 19,292.42
  4. Step 4: Simplify right side
    31,797.78x = 919,101,258.14
  5. Step 5: Solve for x
    x = 919,101,258.14/31,797.78
  6. Step 6: Final answer
    x = 28,904.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.